This article is the electoral history of Louis St. Laurent, the twelfth prime minister of Canada (1948–1957).
A Liberal, St. Laurent served one term as prime minister (1948–1957), succeeding William Lyon Mackenzie King. He won two general elections (1948, 1953) and lost one (1957). John Diefenbaker succeeded him as prime minister, while Lester Pearson became the leader of the Liberal Party.
He stood for election to the House of Commons of Canada five times, all successfully.